The Isuzu i-370 does 18 mpg combined (15.5 city, 22 highway), which works out to about $2,133 a year in fuel at $3.20 a gallon and 12,000 miles. Against other 5-cyl cars it sits below the average of 21.8 mpg.
Every Isuzu i-370 engine, compared
The Isuzu i-370 was rated in a single specification, so its gas mileage does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 3.7L 5-cyl | 15.5 / 22 | 2007–2008 | $2,133 |
What that actually costs
The Isuzu i-370 burns a gallon every 18 miles, so 12,000 miles takes about 667 gallons a year. At $3.20 that is what the table below adds up to.
| Measure | Value |
|---|---|
| Cost per mile | $0.178 |
| Fuel per year | $2,133 |
| Fuel over five years | $10,665 |
| Against other 5-cyl cars | +$372 a year |
| EPA's own estimate | $3,450 a year |
City or highway — who is this car for
The Isuzu i-370 gives up 6.5 mpg the moment you leave the motorway — 22 out there against 15.5 in town, a 42% drop worth $732 a year. A wide gap punishes stop-and-start traffic; a narrow one means the car doesn't care where you drive it.
| Measure | Value | Reading |
|---|---|---|
| City | 15.5 mpg | $2,477 a year if you only drive in town |
| Highway | 22 mpg | $1,745 a year if you mostly commute |
| Gap | +6.5 mpg (42%) | Wide — this car dislikes traffic |
How the i-370 changed over the years
Combined figure across the 2 model years the i-370 was rated in, all of them at 18 mpg.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2008 | 16 / 22 | 1 | $2,133 | |
| 2007 | 15 / 22 | 1 | $2,133 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 2 EPA ratings of the Isuzu i-370 — 1 engine across 2007–2008. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $3,450. Full method.
Frequently asked questions
What mpg does the Isuzu i-370 get?
18 mpg combined on average — 15.5 in the city and 22 on the highway, per EPA ratings across 2007–2008.
How much does a Isuzu i-370 cost in fuel per year?
About $2,133 at 12,000 miles and $3.20 a gallon — roughly $10,665 over five years, or 0.178 dollars a mile.
Which i-370 engine is the most economical?
The 3.7L 5-cyl at 18 mpg.
Is the i-370 good on fuel compared with similar cars?
Against other 5-cyl cars it sits below the average of 21.8 mpg, computed across 217 ratings.
Are these real-world i-370 figures?
No — they are EPA laboratory ratings, the same ones printed on the window sticker, and EPA's own annual fuel estimate for the Isuzu i-370 is $3,450 against the $2,133 we compute at 12,000 miles. Expect a little worse in practice: the spread between the city and highway figures is smaller than the spread between two drivers of the same one.
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